Automatic belt guide and thrower.



I J. H; MUNSON. I AUTOMATIC BELT GUIDE AND THROWER.

APPILIIOA'TION FILED MAR. 13', 1911. Patented July 30, 1912' 3SHEETS-SHEET 1 J. H. MUNSON.

' AUTOMATIC BELT GUIDE AND THROWER.

APPLICATION I ILED MAIL-13, 1911.

Patented July 30, 1912.

3 SHEBTS-SHEET 2.

' J. H. MUNSON. AUTOMATIC BELT GUIDE AND THROWER.

APPLIUATIOH FILEDMAR, 13, 19 11.

(W I a f r NITED STATES PATENT OFFICE? JOHN H. MUNSON, OF LAKE PARK,MINNESOTA.

AUTOMATIC BELT GUIDE AND THROWER.

To all whom, it may concern Be it known that I, JoHN H. .MuNsoN, acitizen of the United States, residing at Lake Park, in the county ofBecker and My invention has for its object to provide an improved beltguide and belt shifting device adapted for general use, but especially.

aiilapted for use in connection with traction engines, and to the aboveends, the invention consists of the novel 'devicesand combmations ofdevices hereinafter described and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several 1;

' gand'holds the roller 12 in posltlonon the p l stem 1.1.

views. Referring to the drawings, Figure 1 1s a view showing theimproved device in end elevation apphed' in working positionto atraction engine; Fig. 2 is a view of the improved device in sideelevation, on an enlarged scale,'withsome parts sectioned'onthe line 0000 of Fig. 1; Fig. 3 is a plan view of the improved device, on anenlarged scale, removed from the traction engine, with some parts brokenaway and with some parts shown in a dotted line position;Fig. 4 is adetail view, on an enlar ed scale, with some parts sectioned on the linem m of Fig. 3 and Fig. 5 is a detail view, on an enlarged scale, withsome parts sectioned on the line.

m of Fig. 3.

Of the traction engine illustrated for the purpose of showing theimproved device applied in working position, the numeral 1 indicates theboiler, and 2 the pulley over which runs a'belt 3.

Referring to the improved belt guide and belt shifting device, thenumeral 4 indicates a skeleton supporting brac ket-, preferably madeupof angle irons and, as shown, is securedto one side of the boiler-'1,slightly forward; of the pulley-l 2,-:by meansof a clamping-band 5..This clamping band 5 is secured to the brackets l-and extends fromboth-sides thereof around the boiler ,1 and isclamped thereon againstsliding movement byany suitable meansfsuch as a'draw bolt, (not shown)interposed 1n the clamp- Specification of Letters Patent. Applicationfiled March 13, 1911. Serial No. 613,293.

' Patented. July 30,1912.

ingband 5. If desired, two of these clamping bands may be used in placeof the one shown. The bracket 4 is provided with ahorizontallyprojecting stem 6 which is rectangular in cross section,except at its extreine outer end portion, which is round and has beenindicated by the numeral 7. Loosely telescoped onto the stem 6 is asleeve 8 that'is also rectangular in cross section but considerablylarger than the stem 6. This sleeve 8 is slidably mounted on. the stem6,-

by means of rollers 9 placed withinv the sleeve '8- and rotativelymounted on nutted 1 bolts 10 passed through the sleeve 8 and a1? rangedin horizontally and vertically extended pairs, at both ends of thesleeve 8.

Rig-idly secured to anddepending from the- "under side of the sleeve 8is-a stem 11 on. which is rotatively mounted avertically extendedguiding and shifting roller 12. At ithe extreme lower-end of the stem11,- a nut has screw threaded engagement therewith Mounted on the stemportion 7 is-a pair of collan's, 13 and 14: having on their opposite,Qinner faces cooperating half clutches 15 and .116, respectively. with astem 17 which normally extends ver- Qtically downward therefrom. On thisstem. 17 is rotatively mounted a second belt guiding roller 18 that isheld on the stem 14 by The collar 14 is provided means of a nut havingscrew-threaded en.- gagement with the lower end thereof. Normally, thelower section of the belt 3 loosely runs between the laterally spacedand. de-.

pending rollers 12 and 18. Extending over and between the rollers 12 and18 is a horizont'ally extended sleeve-like roller 19 rotativelymounted-on a long rod 20 which extends parallel to the stem 6 and stemportion '7 and is supported therefrom at its ends by means of a, pair ofbrackets 21, one of which is secured to the stem 6 and the other thereof'18 secured to the stem. portion 7. This roller 19 keeps the belt3 outof engagement with the stem 6v and the adjacent parts carried thereby,and thereby prevents undue fr'iction'and damageto the belt 3. To.preyent binding of the sleeve 8 on the stem 6, when the iunning belt 3comes in contact with the roller 12, a bracket. 22. is rigidly securedto the under side of the sleeve 8 and projects laterally therefrom. Theouter end of this bracket prongs thereof embrace the roller 19. and

22 is bifurcated and the I have rotatively secured therebetween a roller23 adapted to run upon the outer sur-- face of therojller 19' as thesleeve 8 travels on the stem 6. The collar 14 is rotatively mounted onthe stem portion 7 and the collar 13 is mounted on the stem portion 17for limited sliding movement ahd is held against ment withthehal-f-clutch 16, and

, clutch members are a hub which is loosely telescoped onto the stemportion 7 and is pivotally secured thereto by means of a pivot pin 25.The lever 24 is connected to the collar 13 by .means of a pair of'links26 pivotally secured to one end of the lever and to opposite sides ofthe collar 13. The opposite-end of the. lever 24 to which the links 26are secured,

is bifurcated and betweenthe prongs thereface, 29 and a clutches 15 and16 areheld of, is pivotally mounted an anti-friction roller 27, thepurpose of which will presently appear. Secured to one side of thesleeve 8 is a forwardly extended spring lever 28 provided at its forwardend with a cam surroller engaging seat 3.0. Whenthe roller 27 of thelever 24 is engaged bythe seat30 of the lever 28, the halfinterlockedand and 18 are in During the outthe belt guiding rollers 12 theiroperative positions.

ward movement of the sleeve 8, the cam surface 29. engages the roller-27and moves the lever 24 on its pivot 25, and, through the links 26,separate the half-clutches 15 and 16 and under the return movement ofthe sleeve 8, the cam surface 29 again returns the half-clutches 15 and16 to their interlocked position.

The sleeve 8 is moved back-and forth on the stem 6. by means of 'a pairof oppositely projecting cables 31 and which gives the forward movementto the sleeve 8, is secured at one of its ends to a forwardlyextendedportion of the sleeve 8 and is passed over a guide sheave 33mounted in an L-shape bracket 34, rigidly secured to the extreme outerend of the stem portion'7. The other end of the cable 31 extends rearward and is secured to a windin .drum 35 which, in turn, is rigidlysecure near the inner end of a long operating shaft 36 which extendsalong the side of the boiler 1 and is provided atits outer end with ahandwheel 37 which is within easy reach of the engine platform. Theshaft 36 is rotatively mounted in a pair of bearings 38 and 39. The

bearing is secured to and carried by the 32. The cable 31 belt and tosition and bracket 4, and the bearing 39 is secured to the-rear endportion of the'boiler 1. To look the shaft ratchet device 40 is securedto the shaft 36 and the bearing 39. The -cable 32, which gives thereturn movement to the sleeve 8, is secured at its forward end to arearwardly projecting portion of the lever 28 and its other end issecured to the winding drum 35. The cables 31 and 32 are so arrangedthat 'when one of the cables is wound onto the winding drum 35, theother is unwound therefrom, and vice 'versa.

The operation of the above described device may be briefly stated asfollows: lVhen it is desired to throw the belt 3 off from the pulley 2,the shaft 36'is rotated by means of the hand wheel 37, in a direction towind the cable 31 onto the drum 35, thereby moving the sleeve 8 outwardon the stem.6, thus brmging the roller 12 into engagement with the inneredge of the belt 3. During this same movement, the cam surface29 actingon the -roller 27 of the lever 24, releases the clutch members 15 and 16at which time the roller 18 is free for swinging movement. As the belt'3is crowded outward by means of the roller 12 acting on its inner edge,the outer edge of thebelt 3 comes in contact with the roller 18 andunder the runn ng movement of the belt 3, which is moving in thedirection of, the arrow marked on Fig 1, the roller 15 will be swunginto a substantially horizontal position, as indicated by dotted linesin Fig. 3, thereby permitting the belt 3 to move under the roller 15 asthe same is forced edgewise off from the fly wheel 2 under the continuedlateral movement of the roller 12. As soon as the belt 3 drops oil fromthe pulley 2, the roller 18 returns to its normal position under theaction of gravity.

What Iclaim is: I

' 1. Ina belt guiding and shifting device comprising a pair of dependingbelt guiding devices, one of which is mounted for travel- 36 in setposition, a pawl and mg movement toward and from oneedge of I the belt,and the other of which is mounted for swinging-movement in a planeparallel to the plane of movement of said belt, and means for operatingsaid traveling belt guiding device, said swinging belt 'uiding devicebeing adapted to be engaged by said e moved into an inoperativepoarranged to be returned to an operative ppsition by the action ofgravity. 2. In a elt guiding and shifting device comprising a pair ofdepending belt guiding device's, one of which is mounted for travelingmovement toward and from one edge of the belt, and the other thereof ismounted for swinging movement in a plane parallel to' the plane ofmovement of said belt, arranged to be moved into an in jipera' -t iveposition when engaged by the belt, andscribed.

3. In a belt guiding and shifting device comprising a pair of dependingbelt guiding devices, one of whlch 18 mounted for traveling movementtoward and from one edge of the belt,'and the other thereof is mountedfor swinglng movement, arranged -to be moved into an inoperativeposition when engaged by the belt, and adapted to be returned to anoperative position under the action of gravity, means for operating saidtraveling beltguiding device, and means carried by said traveling beltguiding device for locking and for releasing said swinging belt guidingdevice when in an operative position, including cooperating clutchmembers, substantially as described.

4. In a belt guiding and shifting device comprising a pair of dependingbelt guiding devices, one of whichis mounted for traveling movementtoward and from one edge of the belt, and the other thereof is mountedfor swinging movement, arranged to be moved into an inoperative positionwhen engaged by the belt, and adapted to'be returned to an operativeposition under the action of gravity, means for operating said travelingbelt guiding device and means carried by said traveling belt guidingdevice for locking and for releasing said swinging belt guiding devicewhen in an operative-position, including coperating clutch members and acam equipped lever, substantially as described.

5. in a device of the kind described, the eombimition with a supportingstem, a sleeve mounted to slide thereon, and means for moving saidsleeve, of pair of collars mounted on said stem. and having cooperatingclutch members, one of said collars being mounted for rotary movementand the other thereof, for sliding movement, belt guiding rollerscarried by said sleeve and said rotary collar, and means for moving saidsliding collar for rendering said cooperating clutchmembers operativeand inoperative. substantially asdescribed.

6.. In a device of the kind described, the

combination with a supporting stem, .a

sleeve mounted to slide thereon, and means for nmvin said sleeve. of aair of collars mounted on said stem and having cooperating clutchmembers, one ct collars being mounted for rotary movement and the otherthereof, for sliding movement, belt guiding rollers carried by saidsleeve and said rotary collar, and means carried by said sleeve formoving said sliding collar for rendering said cooperating clutch membersdescribed.

'7; In a device of the .kind described, the combination with asupporting stem, a sleeve mounted to slide thereon, and means for movingsaid sleeve, of a pair of collars mounted on said stem and havingcooperating clutch members, one of said collars being mounted for rotarymovement and the other thereof, for sliding movement,

.belt guiding rollers carried by said sleeveand said rotary collar, alever mounted on said stem, a link conn'ectingsaid lever' and saidrotary collar, and an arm carried by said sleeve and operative on saidlever to render said cotiperating clutch members operative andinoperative, substantially as described. I

8. In a device of the kind described, the

combination with a supporting stem, a

sleeve mounted to slide thereon, and means for moving said sleeve, of apair of collars mounted on said stem and having cotiperating clutchmembers, one of said collars being mounted for rotary movement andtheother thereof, for sliding movement, belt guiding rollers carried bysaid sleeve and said rotary collar, a lever mounted on said stem, a linkconnecting said lever and said rotary collar, and an arm carriedby saidsleeve and having at its free end a cam.

surface for operating said lever, substantially as described.

9. In a device of the kind described, the combination with a supportingstem, a sleeve mounted to slide thereon, and means for moving saidsleeve, of a pair of collars mounted on said stem and havingcotiperating clutch members, one of said collarsbeing mounted for rotarymovement and the other thereof, for sliding movement, belt guidingroller equipped stems depending from said sleeve and saidrotatingcollar, a lever-intermediately pivoted to said supporting stem,a link connecting said lever to said sliding collar, and a spring armcar ried by said sleeve and having at its free enda cam surface foroperating said lever, substantiallyas described.

10. In a device of the kind described,

the combination with a supporting stem,

operative and inoperative, substantially as and asleeve mounted to slidethereon, of a 1 pair of reversely extended cables secured to said sleeveand arranged to move the same in reverse directions, a pair of collarsmounted on said stem and having cooperating clutch members, one of saidcollars being mounted for rotary movement and the other. thereof, forsliding movemerf,

belt. guiding roller equipped stems depending from said sleeve and saidrotary collar, a lever intermediately pivoted to said supporting stem, alink'connecting said lever to said sliding-collar, and a spring armcarried by said sleeve and having at its free end a cam surface foroperating said lever,

it substantially as described.

11. In a device of the kind described," the combinationwith asupportingstem, and a sleeve mounted to slide thereon, of a drum equippedoperating shaft, a pair of refor vsliding movement, belt guiding on saiddrum, a 'pair'of collars mounted on said stem an having cooperatingclutch members, one ofsaid collars being mounted for rotary movementandthe other thereof,

roller equipped stem depending from said sleeve 15 sleeve and having atits free end a cam 20 surface --for operating said lever, substantiallyas described.

- In testimony whereof I affix my signature in presence of twowitnesses.

JOHN H. MUN SON Witnesses:

B. HANSSON, JoHN HELLAN.

Washington, D. 0.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

